No Light Perception (NLP vision)
Various scales have been developed to describe the extent of vision loss and define blindness.[1] Total blindness is the complete lack of form and visual light perception and is clinically recorded as NLP, an abbreviation for "no light perception."[1] Blindness is frequently used to describe severe visual impairment with residual vision. Those described as having only light perception have no more sight than the ability to tell light from dark and the general direction of a light source.
colour blindness
A Vision of Blindness - 2008 TV was released on: USA: 29 September 2008 (TV premiere)
Blindness is the inability to see anything, while vision impairment happens when an eye condition affects the visual system and its vision functions. The most common causes of blindness and vision impairment at a global level are cataracts and refractive error.
The Virginian - 1962 Vision of Blindness 7-4 was released on: USA: 9 October 1968
Totally blind is abbreviated as NLP. Meaning no light perception. The person cannot distinguish between light and dark.
Causes their vision at night to lessen.
no
Strokes are more likely to produce blurring vision rather than complete blindness although blindness is certainly possible.
no they are not born with colour vision. if they did it would be odd that they grew up with colour blindness.
This cloudiness can cause a decrease in vision and may lead to eventual blindness.